[Oilpan] Move WorkerScriptController to Oilpan heap on Oilpan build

Source/core/workers/WorkerGlobalScope.h

 /*
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 149 matching lines @@
 #endif
 
     const KURL& virtualURL() const final;
     KURL virtualCompleteURL(const String&) const final;
 
     void reportBlockedScriptExecutionToInspector(const String& directiveText) final;
 
     EventTarget* errorEventTarget() final;
     void didUpdateSecurityOrigin() final { }
 
-    void clearScript() { m_script.clear(); }
+    void clearScript();
     void clearInspector();
 
     static void removeURLFromMemoryCacheInternal(const KURL&);
 
     KURL m_url;
     String m_userAgent;
     V8CacheOptions m_v8CacheOptions;
 
     mutable PersistentWillBeMember<WorkerConsole> m_console;
     mutable PersistentWillBeMember<WorkerLocation> m_location;
     mutable PersistentWillBeMember<WorkerNavigator> m_navigator;
 
     mutable UseCounter::CountBits m_deprecationWarningBits;
 
-    OwnPtr<WorkerScriptController> m_script;
+    OwnPtrWillBeMember<WorkerScriptController> m_script;
     WorkerThread* m_thread;
 
     RefPtrWillBeMember<WorkerInspectorController> m_workerInspectorController;
     bool m_closing;
 
     OwnPtrWillBeMember<WorkerEventQueue> m_eventQueue;
 
     OwnPtrWillBeMember<WorkerClients> m_workerClients;
 
     DOMTimerCoordinator m_timers;
 
     double m_timeOrigin;
 
     OwnPtrWillBeMember<ConsoleMessageStorage> m_messageStorage;
 
     unsigned long m_workerExceptionUniqueIdentifier;
     WillBeHeapHashMap<unsigned long, RefPtrWillBeMember<ConsoleMessage>> m_pendingMessages;
 };
 
 DEFINE_TYPE_CASTS(WorkerGlobalScope, ExecutionContext, context, context->isWorkerGlobalScope(), context.isWorkerGlobalScope());
 
 } // namespace blink
 
 #endif // WorkerGlobalScope_h